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Preparation method of titanium dioxide composite powder

A technology of composite powder and titanium dioxide, which is applied in chemical instruments and methods, dyeing low-molecular organic compound treatment, inorganic pigment treatment, etc., can solve the problems of the limitation of the wide application of titanium dioxide, the high production cost of titanium dioxide, and the large cost difference. , to achieve the effect of bright colors, good opacity and low production cost

Inactive Publication Date: 2016-12-07
安徽格锐新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, titanium ore resources have become increasingly scarce, and the production cost of titanium dioxide is higher than that of other white pigments, and the cost difference is large, which limits the wide application of titanium dioxide.
Various countries have begun to explore and research composite titanium dioxide, thereby reducing its production cost. The research on titanium dioxide in my country is still in its infancy, and the performance of the products obtained from the research is not good. Therefore, the present invention proposes a preparation method of titanium dioxide composite powder.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation method of titanium dioxide composite powder that the present invention proposes, comprises the following steps:

[0020] S1. Add 0.1-0.5 μm titanium dioxide particles, mica powder, and calcium carbonate into hydrofluoric acid, and stir evenly to obtain suspension A;

[0021] S2, add sodium bicarbonate while stirring, adjust the pH value of suspension A to be 7, obtain compound B;

[0022] S3. Add compound B to water, add water glass and whitening agent VBL at the same time, stir evenly, and filter to obtain mixed solution C;

[0023] S4. Heating the mixture C to 120°C and drying for 60 minutes to obtain the mixture D;

[0024] S5. The mixture D and alumina are put into a grinder and fully ground to a fine powder, which is then bagged.

Embodiment 2

[0026] A kind of preparation method of titanium dioxide composite powder that the present invention proposes, comprises the following steps:

[0027] S1. Add 0.1-0.5 μm titanium dioxide particles, mica powder, and calcium carbonate into hydrofluoric acid, and stir evenly to obtain suspension A;

[0028] S2, add sodium bicarbonate while stirring, adjust the pH value of suspension A to be 7, obtain compound B;

[0029] S3. Add compound B to water, add water glass and whitening agent VBL at the same time, stir evenly, and filter to obtain mixed solution C;

[0030] S4. Heating the mixture C to 140°C and drying for 75 minutes to obtain a mixture D;

[0031] S5. The mixture D and alumina are put into a grinder and fully ground to a fine powder, which is then bagged.

Embodiment 3

[0033] A kind of preparation method of titanium dioxide composite powder that the present invention proposes, comprises the following steps:

[0034] S1. Add 0.1-0.5 μm titanium dioxide particles, mica powder, and calcium carbonate into hydrofluoric acid, and stir evenly to obtain suspension A;

[0035] S2, add sodium bicarbonate while stirring, adjust the pH value of suspension A to be 7, obtain compound B;

[0036] S3. Add compound B to water, add water glass and whitening agent VBL at the same time, stir evenly, and filter to obtain mixed solution C;

[0037] S4. Heating the mixture C to 130°C and drying for 65 minutes to obtain mixture D;

[0038] S5. The mixture D and alumina are put into a grinder and fully ground to a fine powder, which is then bagged.

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PUM

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Abstract

The invention discloses a preparation method of titanium dioxide composite powder, comprising the following steps: S1, adding titanium dioxide, mica powder and calcium carbonate into an acid solution, and uniformly stirring to obtain a suspension A; S2, stirring while adding a pH regulator to regulate pH value of the suspension A to 7, so as to obtain a compound B; S3, adding the compound B into water and simultaneously adding water glass and a brightening agent VBL, uniformly stirring and filtering to obtain mixed liquor C; S4, heating the mixed liquor C, and drying to obtain a mixture D; and S5, putting the mixture D and aluminium oxide into a grinder and fully grinding the materials into fine powder, and bagging. By acid-base replacement, calcium carbonate is replaced with a titanium dioxide composite component. Thus, usage of titanium dioxide is minimized, and cost is reduced. The preparation method of the titanium dioxide composite powder has advantages as follows: raw materials are easily available; production cost is low; and operation is simple. The preparation method can be widely applied in industrial production.

Description

technical field [0001] The invention relates to the field of titanium dioxide composite powder, in particular to a preparation method of titanium dioxide composite powder. Background technique [0002] Titanium dioxide is a white inorganic pigment with non-toxicity, best opacity, best whiteness and brightness. It is considered to be the best white pigment in the world. It is widely used in coatings, plastics, papermaking, Printing ink, chemical fiber, rubber, ceramics, cosmetics, food additives and pharmaceutical industries. However, in recent years, titanium ore resources have become increasingly scarce, and the production cost of titanium dioxide is higher than that of other white pigments, and the cost difference is large, which limits the wide application of titanium dioxide. Various countries have begun to explore and research composite titanium dioxide, thereby reducing its production cost. The research on titanium dioxide in my country is still in its infancy, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/06C09C3/08C09C3/04
CPCC09C1/3653C09C1/3623C09C1/3669C09C3/006C09C3/041C09C3/06C09C3/08
Inventor 刘立丰叶晓红柴修安朱朋利王家俊高庆忠
Owner 安徽格锐新材料科技有限公司
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